differences between NC code & G code

If the spline is output by your CAD/CAM as a series of short line segments then EMC will handle it just fine for the most part. There can be cutter comp issues if going into an inside corner.

Also during actual cutting you will need to use the G64 p with a tolerance value or EMC may bog down.

when i try to run this code shows me an error:
G01 X10 Y10 Z10

why EMC can not excute this code?
is,nt there any way to excute it?

why EMC can not excute this code?

Did you give a feed rate? For example:

F100
G01 X10 Y10 Z10

or

G01 X10 Y10 Z10 F100